Studies on the Dynamics of Stem and Leaf Biomass and Nutritional Quality of Licorice with Different Cultivation Years at Different Growth Periods
To understand the impact of cultivation years and growth stages on the growth,yield,and nutritional components for above ground part of cultivated licorice(Glycyrrhiza glabra),this research focused on licorice plants cultivated two,three,four,and five years.Plant growth,licorice yield,and nutritional components were measured during the vegetation stage,bud stage,early blooming stage,full blooming stage,pod-setting stage,and withered stage.The results indicated that plant height,stem diam-eter,and dry hay yield of licorice increased with the extension of cultivation years.Compared to two-year-old licorice,the dry hay yield of three,four,and five-year-old licorice at the pod-setting stage increased by 26.55%,37.14%,and 37.33%,respectively.Regarding to growth stages,the highest hay yield was observed at the pod-setting stage.With the progression of growth stages,crude protein content and rela-tive feed value gradually decreased,while neutral detergent fiber,acid detergent fiber,and lignin contents gradually increased.For a comprehensive evaluation of both above-ground biomass and nutritional quality,it is recommended to harvest two and three-year-old cultivated licorice at the early blooming stage,and four and five-year-old licorice at the bud stage,to obtain high yield and high quality forage.
NETL
NSTL
万方数据
